ISL8702AIBZ-T

Supervisors Overview

The ISL8702AIBZ-T is a quad voltage sequencer manufactured by Renesas Electronics, designed for supervisory circuit applications. It operates within a supply voltage range of 3.3 V to 24 V and features an adjustable threshold voltage spanning from 1.28 V to 24 V. The device monitors four independent inputs with active low open-drain outputs. It supports manual reset functionality and lacks a watchdog timer or battery backup switch. Operating temperatures range from -40°C to +85°C, with a typical quiescent current of 191 µA. Packaged in a 14-pin SOIC, it ensures reliable power management sequencing.

Supervisors Feature Summary

• Provides sequential power-up control for multiple voltage rails via four independent monitoring channels
• Features adjustable threshold voltages allowing flexible configuration for various system requirements
• Includes manual reset capability for controlled system initialization and recovery operations

Supervisors Applications

• Telecommunications infrastructure power systems
• Datacom equipment power distribution networks
• Industrial control system power sequencing
• Server and workstation power management units

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as the part is marked obsolete. Confirm package integrity and moisture sensitivity level handling prior to assembly. Cross-reference datasheet revisions to ensure compatibility with existing design specifications. Validate operating temperature ranges against environmental constraints. Check for alternative sourcing options due to limited availability status.

Supervisors Selection Notes

Select this component when designing systems requiring precise multi-rail power sequencing without complex external logic. Consider the adjustable threshold feature for adapting to varying input voltage levels. Evaluate the manual reset function against system safety requirements. Assess the absence of a watchdog timer if fault detection is necessary. Compare pinout compatibility with existing PCB layouts to minimize redesign efforts.

Supervisors Part Context

The ISL8702A series belongs to Renesas' portfolio of supervisory circuits, specifically tailored for power management ICs. It complements other sequencers like the ISL8701A by offering quad-channel monitoring capabilities. This family addresses the need for reliable power-on reset sequences in embedded systems, ensuring stable operation across diverse industrial and commercial applications.

Supervisors Replacement Considerations

The ISL8702AIBZ is a tube-packaged variant of the same functional device, suitable for designs not requiring reel packaging. Verify pin compatibility and electrical parameters before substitution. Ensure thermal performance matches the application's heat dissipation requirements.